<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Vue.js 搜索页面</title>
    <script src="https://cdn.staticfile.org/vue/2.4.2/vue.min.js"></script>

    <style>
        /* 隐藏未编译的变量 */
        
        [v-cloak] {
            display: none;
        }
        
        * {
            margin: 0;
            padding: 0;
        }
        
        body {
            font: 15px/1.3 'Open Sans', sans-serif;
            color: #5e5b64;
            text-align: center;
        }
        
        a,
        a:visited {
            outline: none;
            color: #389dc1;
        }
        
        a:hover {
            text-decoration: none;
        }
        
        section,
        footer,
        header,
        aside,
        nav {
            display: block;
        }
        /*-------------------------
        搜索输入框
    --------------------------*/
        
        .bar {
            background-color: #5c9bb7;
            background-image: -webkit-linear-gradient(top, #5c9bb7, #5392ad);
            background-image: -moz-linear-gradient(top, #5c9bb7, #5392ad);
            background-image: linear-gradient(top, #5c9bb7, #5392ad);
            box-shadow: 0 1px 1px #ccc;
            border-radius: 2px;
            width: 400px;
            padding: 14px;
            margin: 45px auto 20px;
            position: relative;
        }
        
        .bar input {
            background: #fff no-repeat 13px 13px;
            background-image: url();
            border: none;
            width: 100%;
            line-height: 19px;
            padding: 11px 0;
            border-radius: 2px;
            box-shadow: 0 2px 8px #c4c4c4 inset;
            text-align: left;
            font-size: 14px;
            font-family: inherit;
            color: #738289;
            font-weight: bold;
            outline: none;
            text-indent: 40px;
        }
        
        ul {
            list-style: none;
            width: 428px;
            margin: 0 auto;
            text-align: left;
        }
        
        ul li {
            border-bottom: 1px solid #ddd;
            padding: 10px;
            overflow: hidden;
        }
        
        ul li img {
            width: 60px;
            height: 60px;
            float: left;
            border: none;
        }
        
        ul li p {
            margin-left: 75px;
            font-weight: bold;
            padding-top: 12px;
            color: #6e7a7f;
        }
    </style>

</head>

<body>

    <form id="main" v-cloak>

        <div class="bar">
            <!-- searchString 模型与文本域创建绑定 -->

            <input type="text" v-model="searchString" placeholder="输入搜索内容" />
        </div>

        <ul>
            <!-- 循环输出数据 -->

            <li v-for="article in filteredArticles">
                <a v-bind:href="article.url"><img v-bind:src="article.image" /></a>
                <p>{{article.title}}</p>
            </li>
        </ul>

    </form>
    <script>
        var demo = new Vue({
            el: '#main',
            data: {
                searchString: "",

                // 数据模型，实际环境你可以根据 Ajax 来获取

                articles: [{
                    "title": "What You Need To Know About CSS Variables",
                    "url": "https://www.runoob.com/css/css-tutorial.html",
                    "image": "https://static.runoob.com/images/icon/css.png"
                }, {
                    "title": "Freebie: 4 Great Looking Pricing Tables",
                    "url": "https://www.runoob.com/html/html-tutorial.html",
                    "image": "https://static.runoob.com/images/icon/html.png"
                }, {
                    "title": "20 Interesting JavaScript and CSS Libraries for February 2016",
                    "url": "https://www.runoob.com/css3/css3-tutorial.html",
                    "image": "https://static.runoob.com/images/icon/css3.png"
                }, {
                    "title": "Quick Tip: The Easiest Way To Make Responsive Headers",
                    "url": "https://www.runoob.com/css3/css3-tutorial.html",
                    "image": "https://static.runoob.com/images/icon/css3.png"
                }, {
                    "title": "Learn SQL In 20 Minutes",
                    "url": "https://www.runoob.com/sql/sql-tutorial.html",
                    "image": "https://static.runoob.com/images/icon/sql.png"
                }, {
                    "title": "Creating Your First Desktop App With HTML, JS and Electron",
                    "url": "https://www.runoob.com/js/js-tutorial.html",
                    "image": "https://static.runoob.com/images/icon/html.png"
                }]
            },
            computed: {
                // 计算数学，匹配搜索
                filteredArticles: function() {
                    var articles_array = this.articles,
                        searchString = this.searchString;
                    console.log(searchString);
                    if (!searchString) {
                        return articles_array;

                    }

                    searchString = searchString.trim().toLowerCase();

                    articles_array = articles_array.filter(function(item) {
                        if (item.title.toLowerCase().indexOf(searchString) !== -1) {
                            return item;
                        }
                    })

                    // 返回过来后的数组
                    return articles_array;;
                }
            }
        });
    </script>
</body>

</html>